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10,855
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Media Type
9,015
texts
1,004
images
701
movies
134
audio
1
data
Topics & Subjects
874
NASA Technical Reports Server (NTRS)
559
Air Force
559
Blue Book
559
Project Blue Book
559
U.S. Air Force
559
UFO
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Collection
3,210
American Libraries
1,324
FEDLINK - United States Federal Collection
1,217
The National Agricultural Library
874
NASA Network Resource and Training Site
858
NASA Images
804
Glenn Research Center Collection
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Creator
874
nasa technical reports server (ntrs)
804
nasa/glenn research center
559
u.s. air force
483
república argentina
312
lee enterprises
252
ukrainian national association, inc.
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Language
7,648
English
540
Spanish
252
Ukrainian
166
Handwritten English
98
Hindi
97
Swedish
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